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Updated: Nov 3, 2025
07:07
Synthetic Methodology for Asymmetric Ferrocene Derived Bio-conjugate Systems via Solid Phase Resin-based Methodology
Published on: March 12, 2015
9.8K
A regioselectively 1,1',3,3'-tetrazincated ferrocene complex displaying core and peripheral reactivity
Gordon W Honeyman1, David R Armstrong1, William Clegg2
1WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde Glasgow G1 1XL UK r.e.mulvey@strath.ac.uk stuart.d.robertson@strath.ac.uk.
Chemical Science
|June 7, 2021
Summary
This study achieved regioselective tetrazincation of ferrocene, forming a novel iron-sodium-zinc complex. This complex exhibits unique reactivity, leading to functionalized ferrocene derivatives and a rare pyridine-metallated compound.
Area of Science:
- Organometallic Chemistry
- Main Group Chemistry
- Synthetic Chemistry
Background:
- Ferrocene derivatives are crucial in various chemical applications.
- Regioselective functionalization of ferrocene remains a synthetic challenge.
- Organozinc reagents offer unique reactivity profiles.
Purpose of the Study:
- To achieve regioselective tetrazincation of ferrocene.
- To characterize the resulting iron-sodium-zinc complex.
- To explore the reactivity of the tetrazincated ferrocene core.
Main Methods:
- Reaction of ferrocene with di-tert-butylzinc and sodium 2,2,6,6-tetramethylpiperidide.
- X-ray crystallography for structural determination.
- Density Functional Theory (DFT) modeling.
- Nuclear Magnetic Resonance (NMR) spectroscopy (1H and 13C).
Main Results:
- Successful synthesis of a trimetallic iron-sodium-zinc complex, [Na4(TMP)4Zn4(tBu)4{(C5H3)2Fe}], 1.
- Structural elucidation revealed an open inverse crown architecture.
- Complex 1 undergoes functionalization, yielding a tetrazincated ferrocene with benzyl ligands (2).
- Reaction with pyridine produces a ferrocene-free complex with a rare 4-metallated pyridine anion (3).
Conclusions:
- Regioselective tetrazincation of ferrocene is feasible using di-tert-butylzinc and NaTMP.
- The novel complex 1 displays versatile reactivity, enabling the synthesis of functionalized organometallic compounds.
- The study highlights new pathways for organozinc chemistry and ferrocene functionalization.
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